Scroll type air compressor

ABSTRACT

A scroll type air compressor provided by the invention utilizes an L-shape mounting frame for respectively mounting a compressor and a generator to a first mounting section and a second mounting section thereon. The generator is mounted to the second mounting section via a plate and is capable of being fine-tuned in displacement with respect to the plate, such that a second end surface of a second drive pulley of the generator can be made coplanar with a first end surface of a first drive pulley of the compressor. The position of the plate can also be adjusted up and down with respect to the second mounting section to a required position so that the distance between the drive pulleys of the generator and the compressor can be adjusted and the tension of a transmission belt can be determined.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention provides an air compressor, and more particularly, to ascroll type air compressor equipped with fast installation andadjustment for the compressor and the generator using a reformedmounting frame.

2. Description of the Prior Art

When a scroll type air compressor is to be assembled, thegenerator/motor is mounted and fixed at the top of the compressorthrough a fixing frame, which has a number of adjusting screws, and byrotating the adjusting screws, the distance between the shaft center ofthe generator and the shaft center of the compressor can be adjusted.The transmission belt should be prevented from slipping when providedwith enough tension through adjustment of the distance between shaftcenters.

On the other hand, the core aligning issue between the two maincomponents should be taken care of when assembling the scroll type aircompressor, i.e., the end surfaces of the drive pulleys for both thegenerator and the compressor should be adjusted to locate at the sameplane before the tension of the transmission belt is adjusted throughthe adjusting screws.

Such design, however, has difficulty assembling and maintaining the aircompressor:

-   -   1. Core aligning of the end surfaces of the drive pulleys for        both the generator and the compressor is not an easy job. It        always takes additional tool to keep the generator and the        compressor in place before they can be assembled and certainly        levels up the complexity of follow-up maintenance.    -   2. It takes fastening three screws at the same time to adjust        the tension of the transmission belt on the frame. Once core        aligning of the end surfaces of the drive pulleys is finished,        the distance between the compressor and the generator cannot be        adjusted, for the tension of the transmission belt, without        loosening the screws again, which may cause misalignment of the        end surfaces of the drive pulleys.

SUMMARY OF THE INVENTION

According to an embodiment of the invention, a scroll type aircompressor with a reformed mounting frame is provided for fastinstallation and adjustment for the compressor and the generator. Thescroll type air compressor includes a mounting frame, a compressor, aplate, a generator, and a transmission belt. The mounting frame includesa first mounting section and a second mounting section. The compressoris mounted to the first mounting section of the mounting frame. Thecompressor includes a first drive pulley having a first end surfaceperpendicular to the first mounting section when the compressor ismounted to the first mounting section. The plate is fine-tunable indisplacement with respect to the second mounting section and is mountedto the second mounting section. The generator is mounted to the secondmounting section via the plate. The generator includes a second drivepulley having a second end surface perpendicular to the first mountingsection when the generator is mounted to the second mounting section.The generator is fine-tunable in displacement with respect to the platein such a way that the first end surface is coplanar with the second endsurface. The transmission belt is engaged with both the first drivepulley and the second drive pulley. The generator drives the compressorto operate by driving the transmission belt. The plate is fine-tuned indisplacement with respect to the second mounting section so that thetransmission belt is adjusted to bear a predetermined tension.

According to an embodiment of the invention, the first mounting sectionhas orientation of a first direction and the second mounting section hasorientation of a second direction. The first direction is a rotation andaxial direction of the compressor and the generator.

According to an embodiment of the invention, the generator isfine-tunable in displacement with respect to the plate along the firstdirection, the plate is fine-tunable in displacement with respect to thesecond mounting section along the second direction, and the generatordrives the transmission belt along the second direction.

According to an embodiment of the invention, the second mounting sectionof the mounting frame includes a plurality of longitudinal holesextending along the second direction and the plate along with thegenerator are mounted to the second mounting section by using aplurality of screws passing through the plurality of longitudinal holes.

According to an embodiment of the invention, the mounting frame is anL-shape frame, with the first mounting section and the second mountingsection perpendicular to each other.

According to an embodiment of the invention, the scroll type aircompressor further includes a fixing frame fixed to both the compressorand the generator.

By using the mounting frame and the plate in the scroll type aircompressor where the mounting frame provides horizontal and verticalaligning convenience for assembling, the relative position between thecompressor and the generator is easy to determine. Effort for corealigning of the compressor and the generator can be extensively reducedsince only axial adjustment is required. Additionally, no furtherspecial tool is needed in order to assemble the scroll type aircompressor of the invention. The tension of the transmission belt can bedetermined by directly adjusting the up-and-down position of the plate.It is also beneficial to simply remove the compressor for replacementalong, leaving the generator on the mounting frame, when the compressorneeds to be replaced.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiment that isillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a scroll type air compressor accordingto the invention.

FIG. 2 is a schematic diagram showing an exploded view of the componentsof scroll type air compressor.

FIG. 3 is a schematic diagram of a front view of the scroll type aircompressor in FIG. 1.

FIG. 4 is a schematic diagram of a side view of the scroll type aircompressor in FIG. 1.

DETAILED DESCRIPTION

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a scroll typeair compressor according to the invention. The scroll type aircompressor 1 includes amounting frame 10, a compressor 20, a generator30, a transmission belt 40, and a plate 50 (or a flange). The generator30 and the compressor 20 are respectively mounted to the mounting frame10 where the generator 30 drives the compressor 20 to operate/providecompressed air by driving the transmission belt 40.

Please refer to FIG. 2 to FIG. 4. FIG. 2 is a schematic diagram showingan exploded view of the components of scroll type air compressor, FIG. 3is a schematic diagram of a front view of the scroll type air compressorin FIG. 1, and FIG. 4 is a schematic diagram of a side view of thescroll type air compressor in FIG. 1. For easy core aligning andproviding proper tension for the transmission belt 40 when configuringthe generator 30 and the compressor 20, in an embodiment of theinvention, the scroll type air compressor 1 uses an L-shape frame as themounting frame 10. The mounting frame 10 includes a first mountingsection 11 and a second mounting section 12 perpendicular to each otheras shown in FIG. 4. In other words, the first mounting section 11 andthe second mounting section 12 are respectively presented as the twoportions of the L-shape frame. Mounted to the first mounting section 11of the mounting frame 10, the compressor 20 includes a first drivepulley 21 having a first end surface 22. The generator 30 includes asecond drive pulley 31 having a second end surface 32.

The transmission belt 40 engages with both the first drive pulley 21 andthe second drive pulley 31 and the generator 30 drives the compressor 20to operate by driving the transmission belt 40. It is therefore a needfor the first drive pulley 21 of the compressor 20 to be core aligningwith the second drive pulley 31 of the generator 30, i.e., aligning ofthe end surfaces of both the first drive pulley 21 and the second drivepulley 31. To install the compressor 20 and the generator 30 to themounting frame 10, the first end surface 22 of the first drive pulley 21and the second end surface 32 of the second drive pulley 31 should be inparallel with each other and coplanar. In an embodiment of theinvention, the L-shape mounting frame 10 provides a foundation of easyparallel and perpendicular adjustments for the major components. Pleaserefer to FIG. 1 and FIG. 4. The first mounting section 11 hasorientation of a first direction D1 and the second mounting section 12has orientation of a second direction D2, and the first direction D1 isperpendicular to the second direction D2, just as the first mountingsection 11 is perpendicular to the second mounting section 12 asmentioned previously. Additionally, for the embodiments of theinvention, the first direction D1 is a rotation and axial direction ofthe compressor 20 and the generator 30, whereas the generator 30 drivesthe transmission belt 40 to travel along the second direction D2. As thecompressor 20 mounted to the first mounting section 11, the first endsurface of the first drive pulley 21 of the compressor 20 is madeperpendicular to the first mounting section 11.

Please refer to FIG. 2 and FIG. 3. The generator 30 is mounted to thesecond mounting section 12 via the plate 50 and since the first mountingsection 11 is perpendicular to the second mounting section 12, thesecond end surface 32 of the second drive pulley 31 of the generator 30also has perpendicular relation to the first mounting section 11. Thegenerator 30 is made fine-tunable in displacement with respect to theplate 50 along the first direction D1. Mounted to the second mountingsection 12 and before completely secured, the generator 30 and the plate50 can be adjusted relatively in displacement and, with the help of astraight tool such as a ruler, the second end surface 32 of the seconddrive pulley 31 of the generator 30 can be adjusted until it is coplanarwith the first end surface 22 of the first drive pulley 21 of thecompressor 20. Core aligning between the generator 30 and the compressor20 is easily completed.

Please keep referring to FIG. 2 and FIG. 3. Once the generator 30 iscore aligning with the compressor 20, adjustment of the tension of thetransmission belt 40 comes next. In the embodiment, the plate 50 is madefine-tunable in displacement with the second mounting section 12 alongdirection D2. More specifically, the second mounting section 12 has aplurality of longitudinal holes 13 extending along the second directionD2 and by passing a plurality of screws 14 through the longitudinalholes 13, the plate 50 and the generator 30 can be fixedly mounted tothe second mounting section 12. After the core aligning of the generator30 and the compressor 20 and before the screws 14 are completelyfastened to the second mounting section 12, the plate 50 and thegenerator 30 are slightly moveable or fine-tunable in displacement withrespect to the second mounting section 12 along the second direction D2so that the transmission belt 40 may be adjusted to bear a predeterminedtension. Afterwards, fastening the screws 14 to the second mountingsection 12 completes the assembling work of the scroll type aircompressor 1. Furthermore, to effectively eliminate vibration at thepower transmission direction (the second direction D2) during theoperation of the scroll type air compressor 1, the scroll type aircompressor 1 may further use a fixing frame 60 fixed to both thecompressor 20 and the generator 30 after the compressor 20 and thegenerator 30 are respectively mounted to the mounting frame 10 and donewith core aligning and tension adjustment for the transmission belt 40.Structural robustness will be enhanced among the compressor 20, thegenerator 30, and the mounting frame 10 with the inclusion of the fixingframe 60.

The scroll type air compressor provided by the invention utilizes anL-shape mounting frame for respectively mounting the compressor and thegenerator to the first mounting section and the second mounting section,which are perpendicular to each other. The generator is mounted to thesecond mounting section via the plate and is capable of being fine-tunedin displacement with respect to the plate, such that the second endsurface of the second drive pulley of the generator can be made coplanarwith the first end surface of the first drive pulley of the compressorin such a way to finish core-aligning adjustment of the compressor andthe generator. The position of the plate can also be adjusted up anddown with respect to the second mounting section to a required positionso that the distance between the drive pulleys of the generator and thecompressor can be adjusted and the tension of a transmission belt can bedetermined.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the invention. Accordingly, the abovedisclosure should be construed as limited only by the metes and boundsof the appended claims.

What is claimed is:
 1. A scroll type air compressor, comprising: amounting frame comprising a first mounting section and a second mountingsection; a compressor, mounted to the first mounting section of themounting frame, the compressor comprising a first drive pulley having afirst end surface perpendicular to the first mounting section when thecompressor is mounted to the first mounting section; a plate,fine-tunable in displacement with respect to the second mounting sectionand mounted to the second mounting section; a generator, mounted to thesecond mounting section via the plate, the generator comprising a seconddrive pulley having a second end surface perpendicular to the firstmounting section when the generator is mounted to the second mountingsection, the generator being fine-tunable in displacement with respectto the plate in such a way that the first end surface is coplanar withthe second end surface; and a transmission belt engaged with both thefirst drive pulley and the second drive pulley, the generator drivingthe compressor to operate by driving the transmission belt; wherein theplate is fine-tuned in displacement with respect to the second mountingsection so that the transmission belt is adjusted to bear apredetermined tension.
 2. The scroll type air compressor of claim 1,wherein the first mounting section has orientation of a first directionand the second mounting section has orientation of a second direction;wherein the first direction is a rotation and axial direction of thecompressor and the generator.
 3. The scroll type air compressor of claim2, wherein the generator is fine-tunable in displacement with respect tothe plate along the first direction, the plate is fine-tunable indisplacement with respect to the second mounting section along thesecond direction, and the generator drives the transmission belt alongthe second direction.
 4. The scroll type air compressor of claim 2,wherein the second mounting section of the mounting frame comprises aplurality of longitudinal holes extending along the second direction andthe plate along with the generator are mounted to the second mountingsection by using a plurality of screws passing through the plurality oflongitudinal holes.
 5. The scroll type air compressor of claim 1,wherein the mounting frame is an L-shape frame, with the first mountingsection and the second mounting section perpendicular to each other. 6.The scroll type air compressor of claim 1, further comprising a fixingframe fixed to both the compressor and the generator.